The LM2931/D series of positive fixed and adjustable output voltage regulators are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential
The LM2931 series consists of positive fixed and adjustable output low‑dropout voltage regulators designed for automotive‑grade reliability. They provide over 100 mA output current, low bias current, and a variety of protection features such as load‑dump, reverse‑polarity, and thermal shutdown.
The document includes ordering information, maximum ratings, electrical characteristics, typical application circuits, performance graphs, and mechanical outline dimensions for the TO‑220, TO‑92, SOP‑8, DPAK and D2PAK packages.
| Input‑to‑Output Voltage Differential | < 0.6 V @ 100 mA |
|---|---|
| Maximum Output Current | > 100 mA |
| Low Bias Current | 0.4 mA at 10 mA output |
| Load‑Dump Protection | 60 V |
| Reverse Transient Protection | ‑50 V |
| Thermal Shutdown | Enabled |
The LM2931 series includes internal current limiting, thermal shutdown, over‑voltage, reverse‑polarity input protection, and temporary mirror‑image protection.
The output capacitor impedance |Z₀| must not exceed 0.4 Ω over the full operating temperature range.